loud lungs

~Audible breathing in the relaxed state has always been one of those things that simply puzzles me. I understand how the heavy breathing that follows intense activity could produce a sound, as the air moves through the nostrils at a rapid pace. However, a persistent sound of exhaling as a person sits relatively motionless (e.g. in a car, watching a movie, sitting in class) mystifies me. It actually kind of disturbs me. It creeps me out to a small degree.
~As I sat in class earlier, I quickly realized that the girl sitting to my left was an audible breather. Hearing the girl's constant breath began to trouble me and it became difficult to pay attention. In an effort to understand what I am going to go as far as to call a "condition", I attempted to achieve the sound myself. No matter how hard I tried, I simply could not produce any noticeable sound from my nostrils. While failing to do so, I soon found myself becoming lightheaded from all of the extra oxygen inhalation.
~At some point I decided that obsessing over something of this sort most likely isn’t healthy and that, given the option between continuing to attempt an audible respiratory system and paying attention to the professor, the superior choice would the one that would aid in the rise of my GPA. Since the class deals with nothing concerning biology, I decided to shift my attention to the professor and away from the sounds coming from my left. It was a struggle.